mc68hc705e5 Freescale Semiconductor, Inc, mc68hc705e5 Datasheet - Page 33

• Manufacturer Part Number: mc68hc705e5
• Description: M68hc05 Family Of Microcontrollers Mcus
• Manufacturer: Freescale Semiconductor, Inc

4.1 Contents
4.2 Introduction
MC68HC705E5
General Release Specification — MC68HC705E5
—
Rev. 1.0
4.2
4.3
4.4
4.5
4.6
4.7
4.8
4.9
4.10
4.11
The MCU can be interrupted six different ways: the five maskable
hardware interrupts (IRQ, timer, CPI, SSI, and M bus) and the
nonmaskable software interrupt instruction (SWI).
Interrupts cause the processor to save register contents on the stack
and to set the interrupt mask (I bit) to prevent additional interrupts. The
RTI instruction causes the register contents to be recovered from the
stack and normal processing to resume.
Freescale Semiconductor, Inc.
For More Information On This Product,
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
Hardware Controlled Interrupt Sequence . . . . . . . . . . . . . . . . .35
Software Interrupt (SWI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
External Interrupt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
Timer Interrupt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
Custom Periodic Interrupt (CPI) . . . . . . . . . . . . . . . . . . . . . . . .39
Synchronous Serial Interface Interrupt (SSI) . . . . . . . . . . . . . .40
M-Bus (I
Operation During Stop Mode . . . . . . . . . . . . . . . . . . . . . . . . . .40
Operation During Wait Mode . . . . . . . . . . . . . . . . . . . . . . . . . .40
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C) Interrupt (M Bus). . . . . . . . . . . . . . . . . . . . . . . . . .40
Interrupts
Section 4. Interrupts
General Release Specification